Display device

Abstract

A display device can include a first light source unit having a plurality of first light sources, a first light controller disposed on the first light source unit and having a plurality of partitions overlapping at least a partial area of the active area, a second light controller disposed on the first light controller and having a plurality of light control patterns overlapping at least a partial area of the active area, a second light source unit disposed on the second light controller and having plurality of second light sources, a light guide plate disposed to be parallel to the second light source unit and configured to guide light provided from the second light source unit, and a display panel disposed on the light guide plate and configured to display an image using light provided from the first light source unit or the second light source unit.

What is claimed is: 
     
         1 . A display device, comprising:
 a first light source unit including a plurality of first light sources;   a first light controller disposed on the first light source unit and including a plurality of partitions overlapping at least a partial area of an active area;   a second light controller disposed on the first light controller and including a plurality of light control patterns overlapping at least a partial area of the active area;   a second light source unit disposed on the second light controller and including a plurality of second light sources;   a light guide plate disposed to be parallel to the second light source unit and configured to guide light provided from the second light source unit; and   a display panel disposed on the light guide plate and configured to display an image using light provided from the first light source unit or the second light source unit.   
     
     
         2 . The display device according to  claim 1 , wherein the active area includes:
 a first area in which an image is displayed at a first viewing angle in each of a first mode and a second mode; and   a second area which is adjacent to the first area in a first direction, the second area configured to display an image at the first viewing angle in the first mode and display an image at a second viewing angle which is smaller than the first viewing angle in the second mode.   
     
     
         3 . The display device according to  claim 2 , wherein the plurality of light control patterns is disposed to overlap a third area including a boundary line between the first area and the second area. 
     
     
         4 . The display device according to  claim 1 , wherein each of at least one of the plurality of light control patterns has a hemispherical shape. 
     
     
         5 . The display device according to  claim 1 , wherein the plurality of light control patterns has a same size. 
     
     
         6 . The display device according to  claim 1 , wherein one of the plurality of light control patterns has a first size and another one of the plurality of light control patterns has a second size which is different from the first size. 
     
     
         7 . The display device according to  claim 3 , wherein the plurality of light control patterns is disposed with a constant density on the third area. 
     
     
         8 . The display device according to  claim 3 , wherein the farther from the boundary line, the smaller a placement density of the plurality of light control patterns which overlaps the third area. 
     
     
         9 . The display device according to  claim 3 , wherein the plurality of light control patterns is randomly disposed on the third area. 
     
     
         10 . The display device according to  claim 1 , wherein each of the plurality of light control patterns has a refractive index which is larger than a refractive index of air. 
     
     
         11 . The display device according to  claim 1 , wherein the second light controller further includes a base layer supporting the plurality of light control patterns. 
     
     
         12 . The display device according to  claim 11 , wherein each of the plurality of light control patterns has a same material as the base layer. 
     
     
         13 . The display device according to  claim 11 , wherein the base layer includes a transparent plastic material. 
     
     
         14 . The display device according to  claim 2 , wherein in the first mode, all the plurality of first light sources and the plurality of second light sources emit are configured to emit light and
 in the second mode, the plurality of first light sources is configured to emit light while the plurality of second light sources is configured to not emit light.   
     
     
         15 . A display device for displaying an image using light provided from at least one of a first light source unit and a the second light source unit, the display device comprising:
 the first light source unit including a plurality of first light sources;   a first light controller disposed on the first light source unit and including a plurality of partitions overlapping at least a partial area of an active area;   a second light controller disposed on the first light controller and including a plurality of light control patterns overlapping at least a partial area of the active area;   the second light source unit disposed on the second light controller and including a plurality of second light sources; and   a light guide plate disposed to be parallel to the second light source unit and configured to guide light provided from the second light source unit.   
     
     
         16 . The display device according to  claim 15 , wherein the active area includes:
 a first area in which an image is displayed at a first viewing angle in each of a first mode and a second mode; and   a second area which is adjacent to the first area in a first direction, the second area configured to display an image at the first viewing angle in the first mode and display an image at a second viewing angle which is smaller than the first viewing angle in the second mode.   
     
     
         17 . The display device according to  claim 16 , wherein the plurality of light control patterns is disposed to overlap a third area including a boundary line between the first area and the second area. 
     
     
         18 . The display device according to  claim 15 , wherein each of at least one of the plurality of light control patterns has a hemispherical shape. 
     
     
         19 . The display device according to  claim 15 , wherein each of the plurality of light control patterns has a refractive index which is larger than a refractive index of air. 
     
     
         20 . The display device according to  claim 15 , wherein the second light controller further includes a base layer supporting the plurality of light control patterns.